Improvement in mechanical movements



UNITED STATES PATENT OFFICE;

WM. A. SUTPHIN, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN MECHANICAL MOVEMENTS.,

Specification forming part of Letters Patent No. 196,951, dated November6, 1877; application filed November 1, 1877.

To all whom it may concern:

Be it known that I, WILLIAM A. SUTPHIN, of Washington city, District ofColumbia, have invented a new and Improved Mechanical Movement, whichimprovement is fully set forth in the following specification andaccompanying drawing, in which Figures 1 and 2 are side elevations, (theoutside of the rocking and arm-supporting post being broken away,)showing the vibrating, rising, and falling arm in different positions.

The object of my invention is to furnish a device by which, from acontinuous rotary mo- 0 tion of the driving or crank wheel, a horizontalor straight path is given to the swinging arm in one direction, and aswinging, rising, and falling movement to the same in the oppositedirection.

In the drawing, A is the table or support; B, the support for the postcarrying the swinging arm, which support may be of any desired shape toadapt it for the particular purpose to which the device may be applied.0 is a post or rock-shaft,journaled in the support or frame B, and inwhich are pivoted the crankshaft D and arm E.

The wheel F, which has a suitable journalsupport, has rotary motionimparted to it by any preferred means. The arm D is attached to the post0 by a pivot-pin, a, which coincides with the axis of the wheel F; andthe opposite end of said arm is journaled in the wheel F, so that aswheel F is rotated the end of the arm journaled therein is carried withit in its revolution, giving only a rocking motion to the post 0. Thearm E is attached to the post 0 by the pivot-pin b, which allows it freevertical play, but is carried by said post in its rocking movement.

To control the movement of the arm E, I construct the arm B with asector-rack, D, and a groove, d, both concentric with. the pivotpin a,and the arm E is provided with a sector-rack, E, and a locking-arm, e.Said arm may be made solid with or attached to the arm E or rack E.

As the crank-wheel raises the arm D, the rack D is made to engage withthe toothed sector-rack E on the arm E and cause said arm to have arising and falling motion. To

give the arm E a horizontal or straight movement during a portion of therotation of the wheel F, I proportion the racks D and E so that they areengaged only during a portion of the rotation of said wheel F, andprovide the locking-arm e on the arm E with a projecting pin andfriction-roller, which engage with the groove (1 on the arm D, so thatwhen the racks are disengaged the groove d will, through the locking-arm0, hold the arm E in a fixed positionrelative to the table, overwhich itswings by the rocking movement of the post To insure the engagement ofthe rack D with that of E, I construct a projection or elongated tooth,f, on the lower or inner side of the rack E, so that as the arm D israised the end of the rack D will abut against saidprojection and raisethe arm E until the teeth of the racks have fully intermeshed.

To insure the entire control of the arm E, the groove 01 is made ofsufficient length and of proper curve at its lower end to control thearm 0 until after the racks have become fully engaged.

The relative proportions of the racks D and E may be varied so as togive the arm E a greater or less swinging movement on the pivot-pin b.

The construction of the racks D and E may be varied so as to have aneccentric form, and thus give an increasing or diminishing throw of thearm E or the racksmay be extended so as to be engaged continuously, thusobviating the necessity of using the groove and lock arm.

When the device is so constructed or adjusted as to have the post 0 in avertical position, the arm E will derive from said post a movement in ahorizontal plane. It is obvious, however, that the post may be placedhorizontal, or at any angle between a perpendicular and a horizontal, inwhich case the straight path, in the movement of the arm, will becorrespondingly changed.

The above-described mechanism is adapted to use in grain-rakes andautomatic grain-binding machines, as well as to various other purposeswhere a similar movement is desired.

What I claim as my invention, is-ar 1. The combination, substantially ashereinbefore' set forth, of the wheel, the crank-arm journaled thereinand. provided with the segmental rack, the post, and the vibrating and.swinging arm 'provided with its rack, whereby a reciprocating rising andfalling motion is imparted to the arm.

' 2. The combination, substantially as hereinbefore set forth, of thepost, the crank-arm provided with rack and groove, and the swinging armprovided with rack and. locking-arm, whereby the arm E is raised and.lowered in one part of its movement, and locked and carried in astraight path in another part thereof.

W M A. SUTPHIN.

Witnesses:

L. L. BOND, JOHN G. TASKER.

